It is the overall mission.
If we look at the evidence from empirical research where social scientists have gone into peacekeeping missions to identify what works and what doesn't work, the research suggests that if peacekeepers are outside of the so-called wire, the mission mandates are often reached in a way that is not possible if the peacekeepers are contained behind the wire.
That means that if they do not go out into the community, if they do not go and talk to leadership and engage the civilian population, if they stay inside the compound so to speak, the peace can't take hold in the same way. Oftentimes, missions last a lot longer when there's a really insecure environment and the peacekeepers are held in behind the wire.